Stove



F. KRUX.

STOVE. 7 APPLICATION FILED JUNE 7.1920.

Patented Nov. 1, 1921.

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4 SHEETS-SH lllll III 1/ dzrne/ F. KRUX.

Patented Nov. 1

1921. 4 SHEETSSHEET 2.

F. K'RUX.

STOVE.

APPLICATION man JUNE 1.1920.

1,1921 4 sums-sum a.

Patented Nov.

F. KRUX STOVE- APPLICATION FILED JUNE 7. 1920.

Patented Nov, 1, 1921.

4 SHEETSSHEEI 4.

Ill lll UNITED STATES FRANK KRUX, OF CHICAGO, ILLINOIS.

STOVE.

Application filed June 7,

T 0 all whom it may concern:

Be it known that I, FRANK KRUx, a citizen of the United States, residing at Chicago, in the county of, Cook and State of Illinois, have invented certain new and useful Improvements in Stoves, of which the following is a specification.

My invention relates to stoves of the general type embodying a firebox, an oven, a boiler, and fines for conducting the hot air currents from the firebox around the oven and boiler, and it is an improvement on the stove set forth and claimed in my Patent No. 730,464, June 9, 1903.

My objects are, first, to dispense with the heating coil and pipes of the aforesaid patent by improving the flue arrangement for conducting the hot air currents around the boiler; second, to provide a novel arrange ment of lines for conducting the hot air currents-successively around the boiler and baking compartment or oven whereby the maximum number of heat units from the fire will come in contact with the walls of the boiler and oven before the hot air currents pass to the outlet flue or chimney; third, simplify the relative arrangement of the boiler and oven and provide for the exposure of a relatively large extent of the walls thereof to the hot air currents, while also arranging the parts in compact relation and facilitating cleaning of the fiues when necessary; fourth, provide a supplemental hood at the back of the stove for taking off the hot air currents after they have been utilized in heating the boiler and oven, thus enabling the boiler and oven to be constructed of maximum depth to increase their capacity; fifth, to provide a heat divider for the firebox when the invention is embodied in a duplex stove such as is adapted for use in boarding houses, hotels, and other large establishments whereby hot air currents from a single-firebox will be split up to flow in opposite directions to the flues for the respective sets of ovens and boilers, thus obviating the necessity of employing-two fireboxes; sixth, to provide improvements adapting the invention for utilization in stoves particularly adapted for use on farms and in locations where there is no running water supply, to the end that provision is made for suitable warming of dishes and, also, for the filling of the boiler from a bucket, pail, pitcher, or the like.

The invention embodies further improve- Specification of Letters Patent.

Patented Nov. 1, 1921. 1920. Serial No. 387,138.

ments such as will appear hereinafter from the description of the particular embodiments of my invention which I have selected to illustrate the principles thereof.

The disclosure of the invention hereinafter given and which appears in the accompanying drawings is to be considered as illustrative, instead of restrictive, of the scope thereof, as modifications may be resorted to.

In the accompanying drawings,

Figure l is a front elevation of a duplex stove such as will be used for boarding houses, hotels, and other large establishments;

Fig. 2 is a plan view, the cover plate being removed and certain parts broken away;

Fig. 3 is a longitudinal section on line 3-3, Fig. 2;

Fig. 4 is a plan view with the cover plate in position; a

Fig. 5 is a longitudinal detail section of the cover plate showing the sectional construction and the depending divider for the firebox;

Fig. 6 is a rear elevation;

Fig. 7 is a cross section Figs. 2 and 3;

Fig. 8 is a longitudinal section through a modified stove where the firebox is located between the boiler and the oven;

Fig.9 is a similar View through a stove which is single or comprises one-half of the length of the duplex stove; and

Figs. 10 and 11 are detail sections of the tops of boilers, showing special forms of filling openings and closures therefor to be used on stoves located where a running water supply is-not available.

Referring first to'Figs; 1, 2, 3, 4, 5, 6 and 7, the stove therein illustrated is of the double or duplex type especially adapted for use in hotels, boarding houses, and other establishments where large oven and boiler capacity is necessary. The shell or casing appears at 1, mounted on a suitable base 2 and provided with any suitable rack or upper part 3.

The ovens are shown at 4 and the boilers appear at 5. The firebox 6 is provided with a grate 7 which has cross-bars 8 and is supported upon flange or bracket 9. The grate 7 can be lifted and let down either to stir the fire up or toremove unnecessary ashes therefrom. Beneath the firebox 6 is the ashpit 10. A door 11 is provided for the fireon lines 77,

box and a door 12 for the ash-pit, the door 12 having a suitable dampen Referring to Figs. 2 and 3, below the top of the stove or its plate 13 is an unbroken top 14 for the ovens 4 and boilers 5 so that there is a flue 15 provided between said top and the underside of the top plate 13, such flue extending the full depth of the ovens and boilers. The end walls of the boilers 5 are separated from the end walls of the casing 1 by diving flues 16 which also extend the full depth of the casing. Underneath the boilers 5 are the flues 17 which extend the full depth of the boilers. The boilers 5 and ovens 4 are separated and there extends upwardly in the spaces between them, the partitions 18 which rise from the base of the stove and stop short of the top 14 thereby providing riser'flues 19 and diving flues 20 whereby the hot air currents after passing under the boilers 5 ascend, pass over the upper edges of the partitions 18 and descend in the flues 20, thence to pass under the ovens 4. The partitions '18 extend the full depth of the easing 1.

To insure the hot air currents coming in contact with all portions of the bottoms of the ovens 4, there are provided deflecting plates 21 serving the purpose of the corresponding plates in my Patent No. 730,464. The hot air currents finally pass from underneath the ovens 4 into the hood 22, Fig. 6, and into the smoke pipe 23, the latter being provided with a suitable damper, 24.

- The upper edges of the partitions 18 and the corners of the flues are preferably rounded as shown at 25 to afford the least possible obstruction for the flow of the hot air currents. I wish it understood that this rounded construction may be resorted to at 7 any corner of any flue, although I have only illustrated it in certain places.

The stove is provided with clean-out covers 26, Fig. 1, covering openings through which access may be had to the flues for the removal of soot and deposits.

The boilers 5 are provided with inlet and outlet nipples 27, 28. which may be suitably connected to the pipes of a water supply system. The boilers have draw-off faucets 29 from which any desired quantity of water may be drawn.

Referring to Figs. 3, 4, 5, and 7, the cover plate 13 which forms the top of the flue 15 is of sectional form, suitably supported on p the casing 1. Certain of the sections have holes 30 which may be covered by suitable stove lids. The central section 13 is provided with a depending divider 31 which extends down into the firebox 6 and serves to split the draft so that the hot air currents from one half of the firebox will flow to the right and those from the other half, to the left, as shown in Fig. 3, whereby a single firebox serves for the sets of ovens and boilers. In Fig. 3 the arrows indicate how the hot air currents pass toward the right and the left to heat the respective ovens and boilers. V

In the stove shown in Fig. 8, a single firebox 6 is provided, and the boiler 5 is located on one side thereof, while the oven 4" is located on the other side thereof. The divider 31 may be used in this form of the invention if desired; The flue 15 is provided between the top of-the stove and the tops of the boiler and oven and underneath the oven and boiler there may be provided deflectors 21 to insure utilization of the full heating effect. Diving flues 16 convey the hot air currents from. the flue 15 to the bottoms ofthe boiler and oven. The hot air currents then pass to the outlet flue 23. The boiler 5 is connected to inlet and outlet pipes 27 and 28, and it may be provided at its front with a draw-off faucet, not shown, similar to the faucets 29. Doors, similar to the doors 11 and 12, are provided.

A dish-warming compartment 32 is provided underneath the oven, below the flue thereunder, to which access maybe had through a door 33, shown by dotted lines.

Fig. 9 represents a single stove such as comprises one half of the duplex stove of Figs. 1, 2 and 3. In brief, the construction shown in Fig. 9 is the same as described for the duplex form of stove, except that the divider 31 is omitted and there is provided-beneath the oven 4 a dish-warming compartment .34 which corresponds to the compartment 32 of Fig. 8. The hot air currents from the firebox 6 flow through flue 15, dive down flue 16, pass under boiler 5, through flue 17 rise through flue 19, de-

scend flue 20 and then pass under oven 4 plate 35 which is internally screw threaded at 36. The closure comprises an externally screw-threaded plug 37. As the boiler and other parts of my stove areof sheet metal, a

it becomes necessary to provide a solid piece of metal 35 for the use of a closure such as shown at37. In Fig. 11 I have shown a funnel-shaped hopper or receiver 38 connecting the top of the boiler 5 with the top plate 13 of the stove through which the water may be poured into the boiler 5. This receiver or hopper 38 is covered by a removable lid 39.

What I claim is:

1. A duplex stove comprising a casing having a cover plate, a firebox contained centrally within the casing, ovens and boilers contained side by side within the casing and spaced from each on each side of said firebox, but connected at their tops, upright partitions rising in the respective spaces between the ovens and boilers, the upper ends of said partitions being lower than the connections between the ovens and boilers, a single flue communicating with the firebox and extending in opposite directions therefrom the full depth of the ovens, boilers, and partitions throughout the length of said flue, said flue having the cover plate for its upper wall and extending straight across the tops of the ovens and boilers, thence down the sides of the boilers, under said boilers, and upwardly between the partitions and the boilers, thence over the upper ends of the partitions, thence downwardly between the partitions and the ovens, and finally under the ovens and thence leading to an outlet, and a partition depending from the cover plate into the firebox for splitting the hot air currents from the firebox to cause a part thereof to travel in one direction and another part to travel in the other direction from said firebox whereby both branches of said flue are supplied with hot air currents.

2. A stove comprising a casing having a cover plate, a firebox contained within the casing, an oven and a boiler contained, side by side, within the casing and spaced from each other but connected by a wall at their tops, :1 vertical partition in the space between the oven and boiler, the upper end of said partition being lower than the wall connecting the oven and boiler, and a single flue communicating with the firebox and extending the full depth of the oven, boiler and partition throughout the length of said flue, said flue having the cover plate for its uppermost wall and the tops of the oven and boiler and their connecting wall for its lower wall and extending straight across the tops of the oven and boiler, thence down the side of the boiler, under said boiler, and

upwardly between the partition and the boiler, thence over the upper end of the partition between said end and thewall connecting the oven and boiler, and thence downwardly between the partition and the oven, and finally under the oven and thence leading to an outlet.

In testimony whereof I aflix my signature.

FRANK KRUX. 

